جستجوی مقالات مرتبط با کلیدواژه « Levelized Cost of Electricity » در نشریات گروه « اقتصاد »

In this study, the idea of utilizing hydrothermal technologies in the power supply portfolio is explored considering the necessity of power security, environmental protection, supplying the ever-growing power demand, and the opportunity to export hydrocarbon resources. The main goal is to determine a minimum guaranteed purchase price from a policy perspective and a confidence interval for sensitive technical and economical parameters from an investment perspective, in a way that electricity generation from hydrothermal resources would be feasible. The research methodology is an innovative combination of Net Annual Worth (NAW), Internal Rate of Return (IRR), and Benefit-Cost Ratio (BCR) indexes with California Electricity Community (CEC) in aims to consider all macroeconomic, technical-economic, and emission parameters of power plants in engineering economics calculations. The research data was collected from the strategic plans of the energy ministry and the related case studies and the year 1398 was considered as the base year. The results of this study from a policy perspective based on the power supply development guideline of REN21 suggest that in the current situation, where subsidized fuels are provided for power plants and the cost of external effects is not considered when calculating the cost of electricity, the hydrothermal technologies in the sixth to twelfth position in the power supply portfolio. Nevertheless, in the developed context of the electricity supply industry, where the power plants are supplied fuels with export prices and the cost of external effects is considered in the calculation of the cost of electricity, the hydrothermal technologies gain the second to sixth position in the power supply portfolio, higher than conventional technologies, such as steam, gas, and combined cycle. Results from an investment perspective show that the minimum guaranteed purchase price should be 6,705 Rials per Kw/h in order for the investment in this field to be feasible for the private section. Hence, considering the current minimum guaranteed purchase price, electricity generation in this way is feasible, only if the design and construction of the main equipment, such as the hydrothermal turbine are done locally and independent on the currency rate fluctuations.

Despite the high potential of geothermal energy in Iran, only 100 MW of geothermal power will be produced in 2017, Because noticeable amount of subsides have allocated to fossil fuels plants in recent years. This study aims to compare final cost of geothermal electricity with electricity cost of other kinds of prevalent power plants in Iran. The levelized cost method includes investment, operation and maintenance, fuel and pollution costs of each technology which produce electricity. Comparison of final costs of electricity on export price of fules and externalities costs reveals that high capacity factor, independence on fossil fuels and low emission costs, would make geothermal power plants competitive with other power plants in Iran. This study suggests that the liberalization of energy prices has a significant effect on geothermal power development in Iran and could provide the possibility for exporting more natural gas to foreign countries.

These days, achieving an optimal model and defining a comprehensive map for energy supply have become necessary in Iran. Considering a holistic approach and drawing a desired state in the different aspects of sustainability, including technical, economic and environmental criteria, this study introduces an optimal model in order to achieve cost-effective and environment-friendly energy resources under various 100 to 500-year scenarios using a genetic algorithm. Results determined the appropriate portfolio of energy resources in each mentioned period. According to the results, the share of fossil fuels to supply energy is higher than the other resources and the relative impact of financial indicator is more substantial than the environmental indicator in short-run, while this trend is rapidly changing toward renewable energy resources; so that a share of 63 percents of fossil fuels in the 100-year period has changed to the share of 62 percents of renewable energies during the 500-year period. Also estimating the harvest of each of the energy resources from there source capacity over a year showed that, along with increasing the length of various scenarios, the use of renewable and environment-friendly resources is recommended nearly full capacity utilization.